Panel-raising machine



(No Model.) 5 Sheets- Sheet 1.

J. LOBNITZ. PANEL RAISING MACHINE.

N0. 312,364. Patented Feb. 17, 1885.

WITNESSES @277/ INVENTOR 5%? ATTORNEYS.

N. PETERS. Pxmwunwgmpheg Wuhmgmn. n. c.

(No Model.) 5 Sheets-Sheet 2.

J. LOBNTZ.

PANEL RAISING MACHINE.

110.312.364. Patented Feb. 17, 1885.

WITNBSSBS: INVBNTOR:

Y BY MVV@ ATlommzs.l

N. PETERS. Fhnxwmmgmpnar. wmhingmn. D. c.

l (No Model.)

J. ALOBNITZ.

PANEL EAISING MACHINE.

Patented Peb. 17, 1885. 2774.

5 Sheets-Sheet 3.

WITNESSES E i w Zig/ INVENTOR l ATTORNEY.

(No Model.) 5 Sheets-Sheet 4` J LOBNITZ.

PANEL RAISING MACHINE.

No. 312,364. Patented Feb. 17, 1885,

WITNESSES @Wz (No Model.) 5 Sheets-Sheet 5.

- J. LOBNITZ.

PANEL RAISING MACHINE. Y No. 312,364. Patented'feb. 17, 1885( WITNESSESmvNToR ATTORNEYS ilnirnn Sterns J ULIUS LOBNITZ, OF MADISONVILLE, OHIO.

PANEL-saisine Mael-HNE.

SFECIFICATION forming part o Letters Patent No. 312,36,clated February17,1885.

Application filed October 24, IHS-l. (No model.)

T CZZZ wwn t may concern:

Be it known that I, JULIUS LOBNITZ, of ll/Iadisonville, in the county ofHamilton and State of Ohio, have invented a new and ImprovedPanel-Raising Machine, of which the following is a full, clear, andexact description.

My invention consists of improvements in contrivances for mounting,adjusting, and operatin g the cutter-heads; also ofimprovenients in thecutters; also of an improved contrivance of the table, and also ofimprovements in the contrivance of the chip-breaker and the gagesforcontrolling the work, all as hereinafter fully described.

Referenceis to be had to the accompanying drawings, forming part of thisspecification, in which similar letters of reference'indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of my improved machine. Fig. 2 is ahorizont-al section ofthe frame on line x x of Fig. 1, showing the tableinverted. Fig. 3 is a longitudinal sectional elevation on the line g/ i/of Fig. 4. Fig. 1i is a front end elevation. Fig. 5 is a plan view. Fig.G is a detail. in section, of the adjusting devices for the main orsurface cutter-heads. Fig. 7 is a side elevation of the lower edgecutter-head and its supports. Fig. 8 is a plan view of one of the edgecutter-heads, showing an angular forni in which I arrange the bits.Figs. 9 and 1() are perspective views of one of the edge cutter-heads,showing modified forms of the edges of the bits for different forms ofthe edges of the panels. Fig. 11 is a back view of a bit for theinaincutter-heads, showing the form in which I propose to construct saidbits. Figs. 12 and 13 are details of the chip-breaker, and Figs. 14, 15,and 16 are details of my improved belt-tightener.

O11 the top of the bed-frame a, I arrange a vertical support, Z), towhich I fit the upperA and lower slide-rests, c and CZ, for the upperand lower horizontal cutter-heads, e and f, respectively, by dovetailguides g, so that said cutter-heads may be readily shifted up or down toset them to the upperand lowersurfaces of the lumber to be dressed,which is placed on the table h, suitably located for passing thematerial along between the cutter-heads, said table being supportedasuitable height above the top of the bed-frame a, for the purpose,

by the brackets z, cast together with said bedframe. The lowerslide-rest, d, is connected by a nut, j, with the adjusting-screw k,fitted in the top ot' frame b, and having a toothed wheel, Z. The upperslide-resto is suspended by the adj Listing-screw m, also havingatoothed wheel, n. These wheelsZ and n are to gear with a socket-crank,0, by a wheel, p, when both screws are to be turned together forshifting both slide-rests up or down together, the crank being thenplaced on the stud-pivot q, suitably arranged for enabling said wheel pto gear with both wheels Z and wat once; but vwhen either slide-rest isto be shifted independently ot' the other the socket-crank is to beremoved froni the stud-pivot q and placed on the slotted upper end, s,of the adjusting-screw, to turn it by a pin, t. that drops into theslot. The bearing-boxes u ot' the mandrels of the cutter-heads c and j"are mounted on the respective slide-rests c and d by transverse slideso, which are tted with adjusting-screws w, by which the cutter-heads mayalso be adjust- `ed transversely to the work, which is also r'equired,as well as the vertical adjustments. For driving these cutter-heads byone belt, x, the said belt, which runs from the drum y on the main shaftz, isp-assed reversely around the pulleys a b' of the cuttcr-niandrels oeZ' to give the right direction to the cutting-bits and thence to thetightenerve. This tightener is mounted on a vertically-sliding stock, f,arranged in a vertical slideway, g', and `geared by the toothed rack 7Land pinion i' with a drum, j', which is counterbalanced by a weight, k',suspended from it by a cord, Z', allowing thc tightener e to shiftreadily according` as the belt as is taken up or let out by the shiftingof the cutterheads up and down along the waysg, and at the same timemaintaining the proper tension; but while this counterbalancedtightening device may be used with good results, what I prefer to useand claim herein consists of the toothed rack It', fixed in thc bottomor back of the slideway g, with a spring-pawl, g, attached to thesliding stock suitably to engage said rack and prevent the idler frombeing forced down by the belt ir; a hand-lever, h3, by which to raiseand lower the tightener, and a tripping-lever, lZ3, to release thespring-paw] g3, said tripping- IOO lever being mounted on thehand-lever, and connected to the spring-pawl g by a cord, js, and havinga coiled spring, la, for retracting it, and all being arrangedsubstantially as represented in Figs. 14, 15, and 16. The upper andlower edge cutter-heads, m and a, are mounted on the upper and lowerslide-rests,

c and d, respectively, so as to be shifted together with them, and theyare also mounted 1o on said slide-rests so that they may be adj ustedboth vertically and toward and from the edges of the lumber to bedressed. They are mounted in the heads of the'T-shaped supports o', thestems of which p are fitted to I 5 slide transversely in the slides q',that are fitted to shift vertically on the dovetail slide-ways s',attached to the slide-rests c and d, respectively, the cross-slides pbeing so arranged that said edge cutter-heads will be shifted to- 2oward and from the edges of the work to set them for wide or narrowpanels, and according as the bits of said cutters are to form wide ornarrow rabbets of the panels. These slides p and q may be adjusted byhand and be secured by bolts t and slot-holes u, simply,

or they may be fitted with adjusting handscrews o.

I propose to construct the bits to in the angular form represented inFig. 8, to project the 3o cutting-edges ahead more than if said bitswere made straight, which has the advantage of increasing the length ofthe cutting-edge for a given breadth of eut on the work and enables thecutters to work easier and cut smoother. The forms of the edges of thecutting-bits are to be varied according to the desired form of thepanel-edge. For example, the straight bevel represented in Fig. 8 willbe used for a plain bevel-edge, the curved form of Fig. 9 for a roundedge, and the form of Fig. 10 for an ogee edge.

I propose to arrange the bits m ofthe main cutter-heads oblique to theaxis, as represented in Fig. 5, which enables a curved edge, y', Fig.11, to be used for dressing plane surfaces, increasing the length of thecutting-edge and enabling it to cut obliquely on the work, both of whichtend to lessen the power required and to make smoother work, and Iarrange the saw-bits wl on the ends of the main cutterheads to cut avertical slit along the work in advance of the bits x', to insure asmoother corner of the shoulder of the rabbet, which the cutters rv areliable to tear and splinter.

In front of the upper main cutter-head I arrange a chip-breaker, a2,which I support in a slotted arm, Z", by a spring-shank, c', which maybe adjusted in the said arm to regulate its position with relation tothe cutterhead 5c and to vary the tension of the spring-arm by shiftingthe latter in the slot of the arm. The

spring-shank of the chip-breaker may be held in place by the grip of thejaws of the split arm or by any other approved means, as a set-screw,Figs. 12 and 13.

At the side of the main cutters, and at a suitable distance back ofthem, I arrange pressuregages d2 and e2, whichrI connect by similarspring-Shanks, f 2 and g2, with similar split supporting-arms, h2 and i,for holding the work securely until it is well past the cutters. Thearms 112 h2 v7 are mounted in standards 7'2 supported on the upper edgeof the work-gage k`lin which said arms are to be fitted so as to shiftlengthwise for setting the chip -breaker and pressuregages toward orfrom said work-gage, and said arms will also be tted to turn in theirbearings for causing the saidbreakerand gages to press on the work withmore or less force, as required, with set-screws or other devices forholding them. The work-gage k2 is adjusted along the slotted lugs Z2 ofthe table for setting it with bolts m2, as required, and the table isfitted to shift away from the cutter-heads over the brackets 'i byturning on a pivot, n2, when the pivot-bolt is slacked olf to remove itfor greater facility in taking off and putting on the cutter-heads whenrequired. The pivot n2 is fitted to an arm, o?, which extends rearwardfrom the brackets 'l and the top of the bed-frame a to support thecounter-shaft pt', from which the edge cutter-heads m and n are drivenby the belts g2 and s, said shaft being supported in the step t2 at thelower end and being driven by the belt u2 froma pulley on the main shaftz.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The combination, in a panel-raisingmachine, ofthe upper and lower cutter-heads, e and f, arranged onvertical slides@ d and crossslides t, also the upper and lower edgecutterheads, m anda', mounted on the vertical slides c d, and beingadjustable thereon vertically and toward and from the Work with theworkholding table, substantially as described.

2. The combination, with the adjustingscrews 7cm, of vertical slides cd, having toothed wheels Z a and slotted heads s, of the socketcrank o,having a toothed wheel, p, and pin t,

`substantially as described.

3. The combination, in a panel-raising machine, of the pulley e',vertically-sliding support ff, disposed parallel with the toothed rackh, spring-pawl g3, connected to said support and engaging said rack,hand-lever h, and tripping-lever fi, with the driving-belt w and thecutter-mandrel pulleys a b', said cutter-mandrels being differentiallyadjustable on the vertical frame b, substantially as described.

4. The T- shaped edge cutter-supports o', having arms p', adjustableinto the slides q', vertically adjustable on the ways s', lattached tothe vertically-adjustable slide-rests c el, substantiall y as described.

5. The combination, in apanel-raising machine, of the upper and lowercutter-heads having the bits x', arranged Obliquely to said heads, andhaving the curved cutting-edges y', said cutter-heads being disposed onvertical slides c d and cross-slides fv, together with the upper andlower edge cutter-heads, m and n', mounted on the vertical slides c d,and adjust- IOO IIO

able thereon vertically and toward and from the Work and the Worlctable7substantially as and for the purpose set forth.

6. The combination, in a panel-raising machine, ofthe upper and lowercutter-heads7 c and f, arranged on vertical slides c d and crossslidesraltogether with the upper and lower edge cutter-heads7 m and a',vhaving` bits w', provided With cutting-surfaces standing atan obtuseangle to their Shanks, said upper and lower edge-cutters being mountedupon the vertical slides c d, and adjustable thereon vertically andtoward and from the Work and the Work-table, substantially as and forthe purpose set for-th.

7. The combination, in a panel-raising machine, with the cutter-headsand \v0rltable,

of the chip-breaker located in advance of the cutter-heads7pressure-gage e2, located at the sides of said cutter-heads, and thepressuregage d2, located back of the cutter-heads7 substantially asdescribed.

S. The Work-gage k2, having means for its connection to the work-table,and standards j?, supporting .the arms of the chip-breaker andpressure-gage, substantially as descr1bed.

9. The Work-table h, arranged on the pivot a2 and iitted on thesupporting-bracket i, together with adjusting-screws and their slots forshifting away fromL the cutter-heads, sub- 3o stantially as herein shownand described.

JULIUS LOBNITZ.

Witnesses:

LoUrs W. GLASON, JAMES GIFFIN.

